Odd use of the word “search”. As if the plane exists out there somewhere and they just have to find it.
Organics.
Microchip US soldiers uniforms for IFF. Create an organic compound that can eat through something. Give it a 24 hour shelf life before it destroys itself. Design it based on DNA, which can identify age, sex, etc.
Put 50,000 of the little buggers into the micro-robots being developed for spying, Fit it into a drone and release onto the battlefield.
No need for a plane
I don't know why this would be interesting. Using a drone for Navy style tanking would be easy. Program an orbit, track, or course and the manned aircraft come in and plug as they need to. In Navy tanking the tanker needs to be in the right place at the right time and that is about it. It does take some skills to work the pattern as the recovery tanker, hawking low fuel state birds. A good recovery tanker will be just upwind when the low state airplane reaches the ship. If the low state aircraft gets waved off or misses the arresting gear he should be able to look just in front of him and see the tanker waiting. The A-6 guys were awesome at that.
It’s not odd if you are looking for other countries to make your fighter jet for you because it’s way cheaper!